Masking unit for a bowling machine



FIG. 1 is a perspective view of my new design for a masking unit for a bowling machine;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side view being symmetrical to the left side view; and,

FIG. 5 is a top plan view thereof, the bottom plan view being symmetrical to the top plan view. 

The ornamental design for a masking unit for a bowling machine, as shown and described. 